SAN ANTONIO – Southside Independent School District is struggling to find substitute teachers during the COVID-19 pandemic. Sharon Fuery, executive director of human resources and administration at Southside ISD, said there are several reasons substitute teachers are not returning this year. Northside ISD, Northeast ISD and San Antonio ISD said the substitute teacher shortage is not impacting their districts. North East ISD said it is always in need of substitute teachers and advertises for them year-round. San Antonio ISD said it is aware of the nationwide substitute teachers shortages, but it is not impacting its district.