It’s finals time, even in the ballet world. Next week, advanced students of the Boston Ballet School will give their end-of-year performance, and in two weeks the company wraps up its 50th anniversary season with Balanchine’s Jewels. Dancers don’t revert to grunge-mode like college students during crunch time, however. The Boston Ballet was at its finest last Thursday in Pricked. They made the audience laugh, cringe, and marvel in awe during the edgy, fun, and technically demanding performance. They earned a well-deserved standing ovation from the audience at the finale. I’ll long remember the performance.