Jenna Dahl, 20, said her materials science and engineering major is an example to the contrary ??? she said her classes are offered only in the fall and spring, so taking a summer would set her back a year.</p><p>Summer should be a time for internships, work or spending time with family, she said.</p><p>I do not think anyone should have to take summer classes, she said.</p><p>UF's high academic s