<P> The following is a list of episodes in the Disney XD Original Series Kickin' It . Bobby Wasabi Martial Arts Academy is known as the worst dojo in the under - performing nationwide Bobby Wasabi chain . To improve the dojo's image the local Bobby Wasabi Crew and their sensei Rudy enlist new kid Jack as a member and to teach them about life, karate and friendship . The series ended on March 25, 2015 . Alex Christian Jones left the cast after Season 2, and Olivia Holt left the main cast after Season 3, but guest stars in three episodes as Kim in Season 4 . </P> <Table> <Tr> <Th_colspan="2"> Season </Th> <Th_colspan="2"> Episodes </Th> <Th_colspan="2"> Originally aired </Th> </Tr> <Tr> <Th> First aired </Th> <Th> Last aired </Th> </Tr> <Tr> <Td> </Td> <Td_colspan="1"> </Td> <Td_colspan="2"> 21 </Td> <Td_colspan="1"> June 13, 2011 (2011 - 06 - 13) </Td> <Td> March 26, 2012 (2012 - 03 - 26) </Td> </Tr> <Tr> <Td> </Td> <Td_colspan="1"> </Td> <Td_colspan="2"> 23 </Td> <Td_colspan="1"> April 2, 2012 (2012 - 04 - 02) </Td> <Td> December 3, 2012 (2012 - 12 - 03) </Td> </Tr> <Tr> <Td> </Td> <Td_colspan="1"> </Td> <Td_colspan="2"> 22 </Td> <Td_colspan="1"> April 1, 2013 (2013 - 04 - 01) </Td> <Td> January 27, 2014 (2014 - 01 - 27) </Td> </Tr> <Tr> <Td> </Td> <Td_colspan="1"> </Td> <Td_colspan="2"> 18 </Td> <Td_colspan="1"> February 17, 2014 (2014 - 02 - 17) </Td> <Td> March 25, 2015 (2015 - 03 - 25) </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Season </Th> <Th_colspan="2"> Episodes </Th> <Th_colspan="2"> Originally aired </Th> </Tr>

How many episodes in kickin it season 4