Here are the answers to your questions:
Question 1: In which central American country can you find more than 96% of the children being able to read when they finish school?
Answer: Costa Rica
Question 2: In this country, students are able to enter a certain track and their diploma is based upon this track they choose.
Answer: Mexico
Question 3: This famous person helped to free the most territories from Spain.
Answer: Simón Bolivar
Question 4: This is something all of the schools in Spanish-speaking countries share in common:
Answer: They all learn a foreign language.
Question 5: This is something that Dr. Mario Molina and Juan Ramon Jimenez have in common.
Answer: Both won Nobel Prizes.