With the UA's spring commencement ceremonies rapidly approaching, it's rare to pass by the iconic Old Main building without seeing a photo session in progress. Today, 90 AVID students from Spring Valley High School in Las Vegas, Nev. pose for a group photo on the stair case. The students, chaperoned by 10 parent and teacher volunteers, visited four campuses across Arizona this week to give students a feel for the differences between public and private, small and large universities.