Well, yes and no.
1) most ppl aren't taking AAS on cycle during the season or during spring and fall camps. That's the most likely time they'll be tested. During the summer they could be on vacation wherever and aren't in school so typically it's an untested period and the best time to be taking a short cycle. Winter is ok too, although they're typically on campus so they could concievably be tested. Dbol could be used but the bloating and weight gain you could get with it are problematic.
2) if you were stupid enough to risk taking AAS in the season, or already got tested (meaning if clean, you're basically gtg) you would avoid tren or something with crazy lethargy. Winny, anavar, and tbol are the drugs the East Germans used to dominate the Olympics for the longest time. Ben Johnson broke 10 seconds on winny. Typically those three drugs have little or no side effects, don't add too much mass, but make you way the hell stronger and faster.
3) if you can only take legal drugs, IMO the best would be mecha, furaza, halo, or epi. They best meet the criteria of a pure performance enhancer. All of those should clear within a month to six weeks, but that's just a guess.