Students at Santa Barbara Junior High crowded into the Marjorie Luke Theater Tuesday for their introduction to the WEB (Where Everybody Belongs) program, in which 8th graders introduce 7th graders to their new school. On the second day of the school year, enrollment grew by 138, putting the district at well over 15,000 students. Also joining the district are 90 new teachers, although some had taught previously as temporaries. This year, public schools will begin the process of implementing new state standards — called the Common Core — that emphasize application of knowledge, as well as content. The last such overhaul was undertaken in 1997.