Ushaq Mahnilari Mekteb Valsi -

Based on the search results, the song is a popular Azerbaijani children's song often used for school ceremonies, such as the final bell (Son Zəng).

Often associated with children's choruses, such as the "Bənövşə" children's choir. Ushaq Mahnilari Mekteb Valsi

(the Zabitə Məmmədova one above, or perhaps the traditional Soviet-era "School Waltz" by Isaak Dunayevsky) I can help refine this with lyrics or further details. "Məktəb valsı" Based on the search results, the song is