Pedophile are those sexually attracted to children. Thus, onus is defining what constitutes as a child. In which case -- a young human being below the age of puberty or below the legal age of majority. Highschools often range from 4-5 years. It shouldnt be suprising if people of these age groups (13-18) start and sustain relationships. If sexual activity is involved its safe to linger on the 18yrs mark. However, for legal practicality always follow your states age of consent. Though, if an individual habitually uses this rule to target younger demographic he is a predator not pedophile.

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maybe not technically a pedo depending on the state and age of consent and all that, but I'm 22 and I can't imagine dating a high schooler
tf we gonna talk about? PE class?
No pedo, I'm just saying