Underpinning CHAT's theory of change is a set of core beliefs informed by decades of family planning work in Kenya. These beliefs guide the philosophy of CHAT's approach.

1. With the reduction of family size, populations reduce pressures on the environment.
2. CHAT believes increased family planning use reduces suffering of everyone, but in particular women.
3. When suffering and struggles are reduced individuals and communities can stop making choices out of desperation that are often costly for the environment.
4. When you increase the spacing between children both mother and child have better health outcomes.
5. Individuals can contribute more towards livelihood and economic opportunities when family size is manageable. This includes social opportunities, education and economic outcomes for all individuals in the community.
6. CHAT works with many partners, but believes government is the most sustainable long-term partner for family planning, health, and environment needs of the community.