Technical schools typically cost less than traditional colleges. Technical school students graduate earlier, often with a two or three year associate's degree rather than a four year bachelor's degree. This keeps tuition costs down at technical schools and allows students to enter the workforce quickly.
Some four year colleges do offer majors comparable to tech school curricula. However, universities often require students to complete additional general education classes. Prospective students need to decide whether or not they want to invest the additional time and money for the liberal arts degree.
Tech schools generally do not offer the traditional college experience of leaving home and living in a dorm. Instead, technical schools tend to cater to a certain area or offer courses online, so technical school students tend to live close to home.
Technical schools teach students a specific trade which limits job options, but provide rigorous training in that field. On the other hand, a bachelor's degree offers more opportunities, but some employers may value the specialized training more than the liberal arts degree.
Most universities hold accreditation and must renew it periodically. Conversely, a small number of technical schools operate as diploma mills--unaccredited organizations that require little or no work for a worthless degree. Always check a technical school's accreditation before applying.