PRTESOL (Puerto Rico Teachers of English to Speakers of Other Languages) is a nonprofit organization affiliated to TESOL. Its purpose is to stimulate professional development, disseminate information about research, books and other materials related to the teaching of English as a Second Language (ESL). PRTESOL organizes activities to keep up-to-date with current trends in the teaching of ESL, to share knowledge and experiences, and to meet with other professionals in the field.