Fast Facts About THS Fast Facts Mission and Vision International Connections A Letter from One of Our Founders Who We Are Faculty Leadership Employment Opportunities Menu About THS Fast Facts Mission and Vision International Connections A Letter from One of Our Founders Who We Are Faculty Leadership Employment Opportunities School hours: 8:45 a.m.-3:45 p.m.Maximum 15:1 student-teacher ratioGrades rolled out one per year:9th grade 2019/202010th grade 2020/2021111th grade 2021/202212th grade 2022/2023Harkness (conference) method of instructionInternational Baccalaureate Diploma ProgrammeInternational Connections with Harkness Institute, Mexico (San Luis Potosi & Puerto Vallarta).Quarterly interdisciplinary themes such as plastic pollution, climate change, nutrition, global challenges, and respect, civility, and citizenship.