This study investigated the effectiveness of workshops on parental involvement in their children's mathematical education. The study employed a quasi-experimental with a pre-test-post-test design. This study involved 76 parents from one senior secondary school in the Kweneng Region, Botswana. The study included three steps for data analysis: thematic content analysis, hypothesis testing, and descriptive statistical analysis. The results showed that the parental involvement level before and after the intervention marked a difference with a significant increase. Parental involvement variables such as parenting style, parental expectations, home rules, parental supervision, communication between parents and children, children's home mathematics activities, and parental attitude toward school all improved significantly. The findings further indicated that parental involvement in their child's general and mathematical learning can be improved. As a result, the study recommended that all basic education schools reach out to parents through parent education programs that can assist parents in understanding the value of being active in their children's mathematics education, which will probably affect their education performance positively.