The power-scaling of the MC is kinda cracked.
So ONE of his 200 skellies is more powerful (against a single unit) compared to a team of 39 people who have 1-2 years of combat experience and are probably level 25-30. AND they ALL are cream-of-the-crop elite prospects in their country who are in the top school in the nation.
Extrapolating, the MC could probably solo like 1000 common class individuals at around level 30?? That's low-balling the math of 39*200 = 7800 but it still sounds unreasonable. Someone could probably argue he could solo 3000 level 30 elite students.
Realistically that team should have been able to clear out two monsters comfortably in 5 minutes, at worst.