Is the 20% fine imposed on those who are late in paying their tuition fees for the Holy Quran memorization school after the specified date considered usury (riba)?

If the fee is determined as a debt owed by the student, then increasing it by imposing a late payment penalty is considered usurious interest (riba) and is forbidden. This has been affirmed by Islamic jurisprudence academies. The way out of this is to set two fees for subscription: the first, lower, for those who pay early, and the second, higher, for those who delay, provided that both fees are known and specified for a known period. This is permissible.