This is "hiragana" on a blackboard, hiragana is one of the three-ish writing systems in use in Japan. Beginners often start with hiragana, and then move on to the others. So this is meant to represent beginners studying Japanese! Study study study!
Blackboard with Hiragana free icon was designed by j4p4n for icons Png and presented to its users.
j4p4n
3/4/2018