Making use of test formals at English classes

diagnostic tests
Referring to Longman Dictionary of LTAL diagnostic tests is a test that is meant to display what the student knows and what she/he does not know/12, 106/. Diagnostic tests identify students' strengths and weaknesses. They provide the teachers with the information on what further teaching is necessary and what problems the students might have in coping with the instruction demands. /7, 9-12/
To conclude, we can conceive that interpreting the results of diagnostic tests the teachers apart from predicting why the student has done the exercises the way she/he has, but not the other, will receive a significant information about his/her group she/he is going to work with and later use the information as a basis for the forming syllabus.
Placement tests
Another type of test we are intended to discuss is a placement test. Concerning Longman Dictionary of LTAL again we can see that a placement test is a test that places the students at an appropriate level in a program or a course/12, 279-280/. Placement tests provide information that helps to place the students at the most suitable stage of the teaching curriculum, bearing in mind their level of the language achieved so far. /7, 9-12/
progress test
According to Alderson, progress test will show the teacher whether the students have learned the recently taught material successfully. Basically, the teacher intends to check certain items, not general topics covered during the school or study year. Commonly, it is not very long and is determined to check the recent material. Progress test typically employed during the study year to check the students' development /6, 217/.
Achievement tests
Apart from a progress test the teachers employ another type - achievement test. According to Longman Dictionary of LTAL, an achievement test is a test, which measures a language someone has learned during a specific course, study or program/12, 3/. Here the progress is significant and, therefore, is the main point tested. Achievement tests are directly related to the language courses taught to the examinees. The purpose of achievement tests is to judge upon the success of individual learners or groups in achieving the objectives of the language course. /7, 9-12/
Proficiency tests
The last type of test to be discussed is a proficiency test. Regarding Longman Dictionary of LTAL proficiency test is a test, which measures how much of a language a person knows or has learned. It is not bound to any curriculum or syllabus, but is intended to check the learners' language competence/12, 292/. Proficiency tests measure learners' language ability regardless of the training they may have had or the vocabulary and topics they may have studied. Proficiency tests are not based on the contents of a language course but rather on the general knowledge of the target language and culture. /7, 9-12/

Test types	testing situations
Proficiency tests	Students have arrived for a summer intensive English course
Achievement tests	An applicant is seeking admission to a University in the UK
diagnostic tests	An English language course has been completed
Placement tests	Students show signs of de-motivation in the lessons