Police arrested them after Stuart's 2-year-old and 5-year-old sons were found covered in bruises and malnourished in their Santa Ana home in June. Authorities found that Stuart had been tying the boys to their bed and crib by their wrists and ankles to keep them from moving.
Prosecutors said Colin, who works with children with behavioral issues in the El Rancho School District, sent dozens of text messages urging his girlfriend to tie the boys down.
Stuart and Colin were each sentenced to 270 days in jail and three years probation.
The two children were hospitalized and released into protective custody. They are not living with a family member.
The Associated Press contributed to this report.