Charter school teachers in Texas were nearly seven times are likely to be uncertified as teachers working in traditional public school districts, according to KSAT Investigates' analysis of last school year's data from the Texas Education Agency.

Earlier this month, KSAT Investigates began looking at the impact of uncertified teachers on education.

After the initial story focused on public school districts, several viewers asked KSAT Investigates to look into uncertified teachers at charter schools.