A school in the old quarters of Moscow often marks a place where a church used to stand. Replacing a church (an equivalent to ignorance and people's minds manipulation) with a school (enlightenment, modernity) was, of course, a vocal sign of progress and, thus, a common practice throughout the Soviet times.
All over the fight for leaving the "tales about God" behind, the main target for the promotion of atheistic thinking was the younger generation. "Babushkas" seemed to be hopeless.
On this poster an old woman pulls her granddaughter to the church, while the girl wants to go to school. An airplane above the school makes it obvious that the future is in education, not in religious beliefs.
Schoolchildren in the 1920ss were massively involved in such practiсes as Anti Christmas and Anti Easter where they could mocking up priests, monks, saints and church-goers. These "festivals" took place on the same nights as the church holidays themselves and ran parallel to the church services. Not all children appreciated the fun, but...
Zinaida, a schoolgirl in the 1920ss recalls: "Antireligious propaganda was all around us in school and beyond it. The Union of the Militant Godless performed it in a crude and indecent manner, which even had opposite effect on me. But still in some others ways, passing by my consciousness, my faith in God insensibly waned. And one day I suddenly said without hesitation: I don’t believe in God".