Imperial units commonly used units for length are (li), (tseung/cheung), (tsek/chek), (tsun/chun), (fen/fan) in descending scale order. These units are now rarely used in daily life, the imperial and metric systems being preferred. The imperial equivalents are written with the same basic Chinese characters as the Chinese system. In order to distinguish between the units of the two systems, the units can be prefixed with "Ying" () for the Imperial system and "Wa" () for the Chinese system. In writing, derived characters are often used, with an additional (mouth) radical to the left of the original Chinese character, for writing imperial units.
Imperial Valley High School, Calexico High School, Holtville High School, Imperial High School, and Brawley Union High School are some of the high schools Imperial Valley has to offer. Imperial Valley College, located in Imperial, California, and SDSU Imperial Valley Extension, located in Calexico, California, are the colleges the Imperial Valley has to offer. The valley also offers a partnership between the local community college, Imperial Valley College, and SDSU's extension which offers a four-year bachelor's degree for students in the area. The program was formally named imperial Valley Partnership University. This partnership was intended to provide students in the valley the