A huge cast of 170 students twirled and tumbled their way through this year’s upper school dance production, “Circus,” held Jan. 27-28 at the Blackford Theater. Songs and routines were themed around the daring and bedazzling performances of three-ring circuses, with students dancing to songs including “Everybody Loves a Circus Show” by Take That, “Funhouse” by Pink and “Tightrope” by Janelle Monae. Continuing the long-standing tradition of faculty members performing at the show, Pilar Aguero-Esparza, Kristina Alaniz, Jill Bettencourt, Shaun Kelley Jahshan, Susan King, Diane Main, Suneeta Mani, Sue Prutton and Victor Squillacioti took the stage for a number driven by Flo Rida’s “Right Round.”