What should an effective development plan should contain and what length of time should it cover?

An effective development plan should include clear goals, specific strategies for achieving those goals, measurable outcomes, and a timeline for implementation. It should also identify necessary resources and support, as well as methods for evaluating progress. Typically, a development plan should cover a time frame of 1 to 3 years, allowing for both short-term adjustments and long-term growth. Regular reviews and updates are essential to ensure the plan remains relevant and effective.