The study examined the extent to which development of quality strategic plans for Anambra State secondary schools' improvement had been done by schools. The research design used was a descriptive survey. Respondents comprised 217 principals. There was no sampling since all the principals were used. Data were collected using "Schools' Strategic Plan Development Questionnaire" (SSPDQ) and these were analyzed using frequency, percentages, mean and standard deviation. Chi-square was used to test the null hypotheses. Findings indicated that the mean responses on the availability of strategic plan document in the schools was 85.4% showing that greater proportion of schools developed their strategic plan document to a high extent. The study also showed that the components of strategic plan were included to a high extent. On the other hand, some essential and requisite components like Targets, Expected Outputs and Performance Indicators were found only in 41(18.9%), 13(6%) and 86(39.6%) respectively, of the 217 strategic plans examined thereby indicating a low extent. The level of commitment by principals and staff need to be propped up in order that their goals will be achieved. Principals were advised to be purposeful and more committed in developing their schools strategic plans.