Hot Science - Cool Talks is hosted by UT Environmental Science Institute (ESI). The program brings leading scientists to the talk and allows audience to hear about their research and ask questions. Before the talk, there is usually a science fair featuring engaging activities for multiple age groups. You can find the recording of the previous talks here.
NASA provides STEM internship opportunities (https://intern.nasa.gov) to K-12 students above 16 years old. The program offers the following options:
Junior Cotillion, with a three year curriculum, is designed to give young people instruction and practice in the courtesies that make life more pleasant for them and those around them; to give them thorough training in standard ballroom dance; and to provide opportunities to practice and enjoy these skills at memorable parties, balls, dinners and events, complete with decorations, refreshments, favors and prizes. The followings are two chapters of this organization in offering class September through May each year.
This class for kids grade 5-8th.