Writing needs writers' control over a good number of variables at a time e.g. grammar (s). mechanics and usages. The Honours and Bachelor (Pass Course) students of Nation( University (NU) of Bangladesh are taught ; Wring with a course called National University Compulsory English Course (NUCEC). Writing of around two million students of Bangladesh under National University depend on the NUCEC. The study has investigated into 21 classrooms of 21 colleges in 3 dhisions of Bangladesh (Dhaka. Rajshahi and Rangpur) and has found out the status of overall proficiency level (OPL) of NU students in practices of writing e.g. situational writing, newspaper writing, institutional writing, personal, formal and informal letters. paragraph writing, essay writing and different grammatical items of NUCEC such as correcting, completing and transforming sentences etc. The study has revealed the overall growth rate of the practices (OGRP) of writing with minimum level of standard (AILS) in consideration of students' sense of accuracy in using grammar, mechanics and usages to produce writing. The study has finally demonstrated the overall rate of NU students having the AILS in writing. The research methodology includes survey, interview observation and proficiency tests as data collection methods. The data collection instruments include 3 sets of questionnaires for teachers, students and administrators, 2 check lists for observing classroom facilities and teaching-learning methods and techniques and II different test papers for testing learners' proficiency on 11 writing items in the course. The sample size of the study is 504 which was taken purposely. Keywords: NUCEC, overall proficiency level (OPL), Overall Growth Rate of Practice (OGRP) of Writing. Minimum Level of Standard (MLS) in Writing Overall Rate of Proficient Students (ORPS) in Writing .