In my lowest moments, I look to the people who have devoted their lives to pursuing justice no matter what.

The teen suspect was questioned last year about online threats, though nothing conclusive emerged. Many local police departments lack the resources to take deeper looks at suspicious actors.

© Christian Monterrosa for The New York Times

Is the problem the man who gave his son a gun, or the gun?

Readers discuss gun laws, trying the suspect as an adult, defining mass shootings and more. Also: A view from AIPAC; an anti-family Republican Party.

In the first of these two articles, I showed paintings illustrating school life from the early seventeenth century to the middle of the nineteenth, a period of more than two centuries when few artists painted the inside of the classroom. This changed from 1850, although the theme still failed to attract the best-known painters.

Albert Anker, father of Swiss painting and known for his large output of ‘genre scenes’, probably painted more classrooms than any other. He painted The Village School in 1848 nearly half a century afterwards, in 1896, presumably from his own recollection of his final year at school in Neuchâtel. Compared to earlier paintings, this classroom is packed, relatively orderly, and well-equipped with benches and desks, even though the children are shabbily dressed, indicating their poverty.

Anker’s earlier painting of The School Exam from 1862 shows a more contemporary scene. It’s not clear whether the pupils are undergoing examination, or the school is. Three of them seen standing out at the front are so poor that they cannot afford shoes at all, but effort is at last being put into their education.

Winslow Homer is perhaps the most famous painter to have made more than one work showing The Country School, believed to be of a country schoolroom in the Catskills, New England. This painting, dated 1871, is the first of a series of three or more showing the same largely empty classroom, with its impossibly wide age range. Two of the boys reading to the teacher are too poor for shoes, although the girls on the right look much better-dressed.

Following the collapse of the Second Empire during the Franco-Prussian War of 1870-71, the Third Republic targeted education for special development. Schools in France had earlier been largely run by the Catholic Church, but from 1833 communes had been required to provide schools for boys but not girls. The anti-clerical Minister for Public Instruction, Jules Ferry, introduced laws in 1881 to establish free education throughout the country, even for girls, and progressively replaced existing Catholic schools with the modern Republican School through the 1880s.

François Bonvin’s The Scholar of 1874 is one of a few paintings showing individual pupils in the classroom. This boy has been granted the privilege of his own desk, at the front of the class, and is working on after the end of the school day. The teacher’s hat and coat are draped over his desk, ready for when this pupil completes his extra work.

Jean-Baptiste Jules Trayer’s wonderful watercolour of A Breton Infants School from 1882 predates any celebration of the Republican policy: the crucifix high on the wall at the right shows that this is one of the older Catholic schools. It shows a teacher helping one of her students with writing, in a class entirely wearing traditional Breton costume. There’s clearly room for improvement, though, as one girl is sleeping on her book, doubtless exhausted from her early morning work on the family farm.

Rising standards of schooling were also reaching out to some of the more remote communities in Nordic countries. Oscar Björck’s painting of Madam Henriksen’s School for Girls in Skagen from 1884 shows a tiny and personal class in this small, isolated community at the northern tip of Jylland (Jutland), home to a major artists’ colony and birthplace of Danish Impressionism.

Then, in the mid 1880s, something remarkable happens to paintings of the schoolroom in France: they become strikingly photographic in their reality, with the advent of Naturalism.

Within two years of the early death of Jules Bastien-Lepage, Paul Louis Martin des Amoignes’ In the Classroom (1886) looks as if it may have been painted from photographs. One boy, staring intently at the teacher in front of the class, is caught crisply, pencil poised in his hand. Beyond him the crowd of heads becomes more blurred.

Jean Geoffroy’s Primary School Class from 1889 doesn’t give us the same depth of field effect, but shows one of the Republic’s new lay teachers working diligently in the classroom with her pupils. They’re still a bit of a shower, with the younger ones at the back working on traditional slates, but this is the public face of the modern Republican School.

In Geoffroy’s In School from about 1900, another lay teacher in a modern Republican infants class is caring for the French men and women of the future.

Of course France wasn’t the only country to be improving its educational system at this time. Nikolay Bogdanov-Belsky’s Mental Arithmetic. In Public School of S. A. Rachinsky from 1895 shows a class of poor students in the village of Tatev in Smolensk province, at the western edge of the Russian Empire in central eastern Europe. They were fortunate enough to have a pioneering educator as their local teacher.

Sergey Rachinsky had been a professor of botany in Moscow until 1867, when he abandoned academic life to run the village school in Tatev. The elderly professor is seen with his students working on a challenging mental arithmetic problem. The teacher died in 1902.

My final painting, by the Ukrainian artist Max Silbert, shows a Singing Lesson in a School in Holland in 1907, and is a fascinating chance discovery. Although its realism isn’t as detailed or photographic as the French paintings from the 1880s above, it shows a similar photographic depth of field effect. The pupils closest to the artist are shown in sharp focus, and those in the further distance are markedly blurred. It’s impossible to tell whether this results from Silbert painting this work from photographs with the same blurring, or it was a deliberate effect introduced by the artist to give it a photographic look.

As the calendar passes into September, it’s time for the summer holidays to end and for children and older students to return to their schools and colleges. This weekend I mark that with depictions of what has really been going on in our educational establishments. Although this hasn’t been a theme for more major artists, these paintings appear disarmingly honest, and should reassure you of the great improvements achieved in recent times.

Isaac van Ostade lived only briefly between 1621–1649, so I suspect this painting of a Village School from his circle was probably made by about 1650, possibly earlier. Although it has seen better days, it shows a schoolmaster at the right supervising a group with a wide age range, all in various levels of poverty, and in primitive stages of education. The classroom itself is almost bare of furniture, with most of the children sitting or squatting on the floor.

Later in the seventeenth century, Jan Steen’s The Village School (c 1665) shows one reason for the apparent unpopularity of school as a motif: physical punishment. The child at the right holds out a hand for teacher to strike it with a wooden spoon, presumably in return for the screwed-up piece of paper on the floor. The children here are better-dressed, and the room better-furnished. One boy at the far right is writing intently, and another, his face almost covered by the brim of his hat, is reading a book.

A few years later, Steen painted a scene in a larger and more chaotic classroom, in The Village School from about 1670. Although there are two staff sat at the teachers’ desk, the man is distracted, perhaps in cutting himself a fresh quill. The woman teacher sat next to him is engaged in explaining something to a pupil.

Around them, all hell is breaking loose. In the distance, a boy is stood on one of the trestle tables. Older children are teaching younger ones, and a small group at a table at the right are trying to write while others get up to mischief. One younger child in the middle of the foreground has fallen asleep against a hat.

In those early schools, boys and girls were not segregated, but enjoyed equally derelict schooling. By the middle of the eighteenth century, in larger schools at least, it became more common for the genders to be taught in separate classes or even different schools.

Boys’ School is a copy of an original painting by Jan Josef Horemans the Younger from the middle of the eighteenth century. Its schoolmaster looks to be the only figure sat at a desk, and is engaged with a couple of the older boys, while the rest of the class catches up with their social lives. A few writing tablets are visible, as are scraps of paper, but the only real books seem to be those well out of reach, above the schoolmaster’s head.

Its sister painting showing a Girls’ School is more peaceful and purposeful, but seems intended to trap young women in their narrow social role. Although one girl is reading, others are engaged in fibrecraft or dressmaking, or apparently learning how to make a brush from a bundle of twigs. More academic learning was only really possible in richer homes, under exceptional private tutors.

Francisco Goya’s With Pain Comes Gain. School Scene from 1780-85 is small and quite Hogarthian in its depiction of corporal punishment in a school. The teacher raises a whip to strike the bare buttocks of one of a succession of pupils, as the more studious continue at their work seemingly disinterested in the suffering of their comrades. Goya is one of the few masters to have painted series of children at play.

In towns and cities, there was greater economic drive for children to work throughout the year, and to obtain a better education. These seem to have taken some schools, at least, to operate well into the evening, as George Gillis Haanen shows in his beautifully lit Night School from 1835. The schoolmaster, ensconced at his elevated desk, does at least look more academic, and there are slates for writing and children reading books.

The nineteenth century also brought the concept of self-improvement, and a growing desire among many of the working and middle classes to better themselves by education, to improve their income and family prospects, also among a growing minority of girls.

Changes remained slower in the country, as seen in this undated painting by one of Eduard Ritter’s circle, of Brave Girls, Bad Boys, School Class in Tyrol, probably from between 1835-1849, the reign of Emperor Ferdinand I of Austria shown in one of its portraits. The children are enjoying a rich range of fruit, and there’s no shortage of paper, even if some of it is being used to make hats rather than for writing. Its elderly schoolmaster looks delightfully benign, and the stem on his smoking pipe is the longest I have seen.

Schools in Europe had arisen to meet the need for clergy and to support the church; those in other cultures were no different, as shown in John Frederick Lewis’s undated watercolour of an Arab School, probably from around 1850. This is what is more properly known as a maktab, providing general schooling between the ages of 6-14, following which children specialise more in their subjects prior to going on to higher education at a madrasah.

Thomas Faed’s paintings have faded from view since it was claimed that he did for Scottish painting what Robert Burns did for Scottish song. His Visit to the Village School from 1852 shows an elderly couple listening to some young children reading, as the schoolmaster is trying to impress his visitors. Older children, though, are not being quite so obliging, and stood against the wall at the far left is a pupil wearing a dunce’s hat in shame.

Scotland, for all the difficulties posed by its far-flung rural and island populations, was in the vanguard of introducing free public schooling: in 1561 the Church of Scotland declared that every parish church should have its own teacher, and that education should be provided free to the poor; an act of the Scottish Parliament raised taxes for that purpose in 1633.

Thomas Brooks didn’t have the benefit of a Scottish education, and his painting of The New Pupil from 1854 clearly shows the more disorderly rabble in an English country school, as a mother introduces her reluctant son to his new class. Brooks’ eye for fine detail and the modern lightness in this work are leading up to what would later be termed Naturalism.

Charles Hunt’s Visit to the Schoolroom from 1859 returns to more traditional style, as a well-dressed mother appears taken aback by the antics going on behind the teacher, and extra-curricular activities include a girl who is about to snip a lock from a boy’s head. At the far right another dunce stands on a chair wearing the trademark conical hat.