ILISA Instituto de Idiomas
- Intensive Spanish language training for business and professional people at locations in San Jose, Costa Rica, and Panama City, Panama. Includes information about courses, accommodations, and travel tips.
- http://www.ilisa.com/

Spanish by the Sea and Spanish by the River
- Sites in San Jose, Costa Rica, and in Bocas del Toro and in Boquete, Panama. Describes facilities, instruction method, and cultural activities.
- http://www.spanishbythesea.com

ILERI Language Institute
- San Jose, Costa Rica, and Panama City, Panama. Run by two professional women with degrees in both International Relations and Spanish as a Second Language. Uses the Total Immersion Method. Offers extracurricular activities, volunteer work opportunities.
- http://www.ilerispanishschool.com