The principal objective of this study was to assess the readability level of Tigrinyarntextbook for grade four students. For doing so, the readability level of the textbook wasrncomputed using the Fog Index readability formula. In order to assess the comprehensionrnlevel of the target students and the readability of the textbook, three cloze tests werernadministered to Wofri Selam elementary school fourth grade students. In order to see thernpossible effect of grade difference on the result, the tests were administered to third andrnFifth grade students. Interviews were also conducted with the students to gather theirrnopinions about the textbook's readability level. Finally, readability checklist was used torngather Tigrinya teachers' opinions about the readability of the textbook.rnThe finding from the Fog Index readability formula indicated the textbook ISrnappropriate for ninth grade students rather than for grade four students. The result of therncloze tests also indicated that the comprehension level of the students (including fifthrngrade students who took the tests) was at a 'frustration level'. This means that the studentsrncouldn't comprehend the textbook even with the help of their teacher. The findings fromrninterviews revealed that the textbook readability level was beyond the learners' level. Therninterviewees attributed this to presence of long and difficult words and sentences; lack ofrnproper text organization and layout. Finally, the checklist's result also showed thatrnteachers rated the textbook to have fair level of readability.rnConsidering all the findings, it is recommended that the textbook readability levelrnshould be lowered to the appropriate level in the coming edition. This can be done by:* Presenting passages centered learners' background, experiential andrncultural knowledge.rn* Supplying enough number of charts, pictures and lists.rn* Rewriting the passages to make the organization more explicit andrnrelevant for the intended learners.rn* Replacing difficult words and sentences by those already frequentlyrnused and familiar to learners.rnReplacing difficult words by relatively easier and frequently used ones andrnavoiding irrelevant details, attempt was made by the present researcher to simplify thernfirst passage used in the study. Accordingly, the passages readability level was lowered tornfifth grade and the target students' comprehension level was raised to instructional level.rnThis means that the students can comprehend the text with the help of their teacher. Sornthe simplified passage is recommended as possible sample passage appropriate to thernintended grade.rnF.inally it is also recommended that till the textbook readability level is improved,rnTigrinya language teachers should be informed about the readability level of the textbookrnso that they will take their own measures in simplifying the textbook's contents. This canrnbe done by prepaling a sort of workshop or seminar for the local teachers .