The objectives of the present study are four-fold (1) to identify the types of strategies to maintain proficiency used by teachers of English in Indonesia (2) to know the intensity of use of the obtain strategy types (3) to measure the inter-correlation in the use of the obtain strategy subject were 93 teachers applying for S2 degree in 2010/2011 at the postgraduate program of the Islamic University of Malang. They were given two sets of instrument a Likert-scale questionnaire of English proficiency maintaining strategies and TOEFL test. Then a factor analysis identified nine strategy categories including language focusing metacognitive and affective developing reading and writing activating language resource utilizing cognitive processing culture learning social communicating text analyzing and radio listening strategies. These strategy types explained 63 84% of variances of maintaining strategies and they were used at high level of intensity. Moreover the use of nine strategy types were found to be inter-correlated with one another. finally no significant effect of proficiency level on strategy use was found indicating that teaches with different level proficiency reported using the same strategies of maintaining their proficiency.