I need help about my teachers!?

I'am 15 and i'am a fraternity member of TAU SIGMA PHI. My teachers and friends were very shock because i'am one of the achievers in the cl. I'am a feature writer, a junior varsity member, and a very active student in the cl. I'am also in the highest section in the juniors cles. They were so shocked, but my friends forgave me and some of the teachers but they still kept putting me down. Do i just ignore them or should i prove to them that i'am still the same student?