The goal is to assist English-language learners with language acquisition and to help students feel more confident in their ability to write effectively in the English language. Writing centers may develop resources and handouts for English-language learners on academic vocabulary and grammatical conventions. Some English Language Learners may access a writing center specifically for grammatical help and error revision from tutors. This may conflict with the philosophy of a writing center to help students become better writers through discussing the overall flow and organization of the paper, rather than focusing on sentence-level revisions. Student tutors are generally taught not to edit papers during a session. Instead they are taught to collaborate on higher-level issues in their peer's paper. Much research has been done on if student tutors should take a more directive approach to teaching writing to English language learners. Ultimately student tutors must receive training on how to effectively teach English as a second language at writing centers so that sessions are effective and meaningful for both English language learners and tutors. Writing center theory Faculty, students, staff, and administrators often viewed writing centers as places for remediation. At their best, however, they are places where all students, including the best ones, can get better, a place (according to Karen Head), "that returns to the ideal of a safe space for active debate and discourse about the best ways to communicate in a variety of modes." Collaboration in theory and practice is one particular idea of a writing center, although creating collaborative environment is really difficult. Collaboration allows tutors to involve students in a dialogue which helps to get in touch with their knowledge and find their unique voices. Collaborative environment rejects any kinds of hierarchies in the writing centers, thus allowing to negotiate and set common goals. Writing center is an institutional response to the writers' needs to have a good listener and editor, someone who knows how to write and can ask questions about the writing which writers would not ask themselves. Variations No longer strictly an American phenomenon, writing centers have spread in other world regions as well. The European Association for the Teaching of Academic Writing (EATAW) is in part concerned with the study and advancement of writing centers in European universities. The International Writing Centers Association offers support for writing centers from around the world, with current regional associations in Europe and proposed associations