i do think so. and to be fair you can actually see people in the game talking about the deaths and their suspicions about them. especially after shinjiro dies, there are housewives in paulownia mall and people just kind of Around that will talk about it being shocking, reconsidering if they should send their kids there, etc.

ryoji isn't really confirmed to have "died" he just kind of goes missing and was only around for a few weeks. and to be honest how ryoji even gets to gekkoukan is itself a mystery because he kind of just spawns in. nobody knows him. it's not like he has government ID because where would he have gotten that. so i don't think his sudden disappearance would make anything of a fuss outside of gekkoukan. i could see him becoming like a folk story at gekkoukan because he kinda just feels like an apparition who was there then disappeared and nobody ever said anything about it

as for the MC, that. it's not really a suspicious death so to speak? in that i think it'd just be passed off as him dying from unknown health problems? it's not like he died in a suspicious or gruesome manner like how ikutsuki/takeharu die on the observation tower or how shinjiro dies to gun violence. i mean, at my highschool like five kids died but three were from health complications, it didn't really affect the reputation of the school as a whole. but yeah certainly shinjiro and ikutsuki and takeharu's death would probably lead to the school having a bad reputation ^_^ especially in conjunction with the accident 10 years ago, of which (while obscured by the KG) did impact its reputation