Hello! I’m Dr. MEL. Nice to meet you! I’m absolutely excited that we are going to start this beautiful learning journey together and I’m sure you will find it fruitful and fulfilling. Feel free to share your thoughts here!
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I want to explore the impact of after-school activities on students from low-income families. Can I select two classes (A and B) in one school, make A receive the service and B not, to examine the service effect?