All participants in the Global Sky Partners program are requested to complete evaluation for the program as a whole, and individual partners are encouraged to perform their own specific evaluation (with assistance from LCO). The reach for 2019 was:

• 2,300 - Mentoring, workshops and training programs
• 8,400 - Online and citizen science programs
• 13,000 - In-direct audience (e.g. students, whose teachers had direct contact)

The audience demographics were:

• 21% of the audience are from disadvantaged or under-represented communities, or developing world countries.
• 31% of the audience are mentored in publication quality research projects, resulting in 28 publications in professional journals, and 4 talks at professional conferences by high-school students.
• 34% of the audience take part in workshops.
• 23% of the audience take part in teacher training.