They had fled across the border to Bangladesh amid heavy fighting between the Myanmar military and rebel insurgents in Rakhine
Ismat Ara, the executive officer of Kapasia Upazila, slapped the fines on the parents during a mobile court drive on Wednesday.
The mobile court filed cases against the parents and fined them total Tk 5,300 instantly as a warning.
Ismat noted that the government has kept the educational institutions closed amid the surging outbreak so that the young students can stay at home and away from the coronavirus.