i suppose it depends on what school you go but the main differences i can think of are that with an external gym it will most likely charge you to use their facilities whilst the school may not and either gym may have a different set of rules to each other which you may want to check out before you go.
Chat with our AI personalities
1
Gold, Silver, Crystal, HeartGold, and SoulSilver Versions. They all have 16 gyms (two regions).
eight.
16
you keep on battling the gyms