Sadeeqa Learning System Montessori and High School (SLS) Islamabad is a private educational institution in Islamabad, Pakistan. It was founded in 2001 and offers Montessori and High School education to students from ages 3 to 18.

SLS is accredited by the Ministry of Education, Pakistan. The school is also a member of the International Montessori Council.

The school's mission is to provide a high-quality education that is based on the Montessori philosophy. The school believes that all children are unique and have their own individual learning styles.

SLS provides a supportive and nurturing environment where students can learn at their own pace and in their own way.

The school's curriculum is designed to develop students' intellectual, emotional, and social skills. SLS offers a wide range of subjects, including English, Mathematics, Science, Social Studies, Islamic Studies, Urdu, Arabic, and Computer Science.

The school also offers a variety of extracurricular activities, such as sports, music, art, and drama.