You have been hired by a charitable foundation to manage their endowment. They use the endowment to fund schools, both development and maintenance (e.g. annual salaries of teachers). Right now, establishing and running schools uses about 10% of the endowment every year. Thus, to simply maintain current growth, they need returns of 10%. Describe an investment policy for this foundation, including a discussion of asset allocation and the balance between the necessity for returns and for maintaining the capital of the endowment.