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...The mixed proficiency language class consequences for students professors and institution la clase de varios niveles consecuencias para los estudiantes profesores y institucion lenna barrantes elizondo universidad nacional sede regional brunca costa rica abstract this article examines effects of a on par ticipation progress retention classroom management with enrolled in associate program english at campus social economic that phenomenon may have university community are also analyzed data were collected using focus groups interviews questionnaires structured observations artifacts resumen se examinan efectos reunir con linguis ticos en una sola ingles como lengua extranjera sus participacion progreso retencion el desarrollo di plomado analizan las sociales economicas comunidad informacion recolecto grupos focales entrevistas cuestionarios observaciones estructuradas artefactos recibido marzo aprobado agosto correo electronico gmail com letras issn x eissn keywords as foreign linguisti...