When I was 15, I was about the same size. I think by the time I was 17 I was like 5'10" and maybe all of 150, i.e. about the same level of emaciated freakness, but bigger overall.
And, unsolicited words of advice/caution: I know Greyskull/Johnny P are all about going for AMRAP on the last set, and I see that you did AMRAP on your DLs. Just be careful not to overdo it on the DL, given the amount of weight you are moving. They are pretty stressful on your body (and thus spur plenty of adaptation) as-is, and adding reps beyond the usual 5 may not ultimately be that helpful. I don't know if Greyskull recommends AMRAP on the DL, though; I'm sure JP has trained enough people to have noticed if it's problematic or not. It's probably also self-limiting anyway, i.e. as it gets heavier for you, you'll be hard-pressed to hit 5 reps anyway.
Happy lifting, happy eating, happy growing, and good luck with highschool.