In addition, according to Rebecca M. Valette,  “achievement tests are  usually  not  built  around  one  set  of  teaching  materials  but  are
designed for use with students from a variety of different schools and programs.”
8
In the writer’s opinion, achievement test is a test which is designed to know how successful students have mastered the previous materials
of  a  long  period  of  course  and  whether  they  have  achieved  the educational  objectives.  So,  by  achievement  test,  it  is  able  to  compare
among  individual  students,  classes  and  school  progress  with  others across the country.
According  to  Wilmar  Tinambunan,  there  are  four  types  of achievement  test:  placement,  formative,  diagnostic,  and  summative
test.
9
1. Placement Test
“Placement  tests  are  designed  to  assess  students’  level  of language  ability  so  that  they  can  be  placed  in  the  appropriate
course  or  class.  Such  tests  may  be  based  on  aspects  of  the syllabus  taught  at  the  institution  concerned,  or  may  be  based
on  unrelated  material.  In  some  language  centres  students  are placed  according  to  their  rank  in  the  test  results  so  that,  for
example,  the  students  with  the  top  eight  scores  might  go  into the top  class.  In other
centres the students’ ability in different skills such as reading and writing may need to be identified. In
such a centre a student could conceivably be placed in the top reading  class,  but  in  the  bottom  writing  class,  or  some  other
combination. In yet other centres placement test may have the purpose  of  deciding  whether  students  need  any  further  tuition
at all.”
10
Also,  a  quote  by  James  Dean  Brown  in  his  book  Testing  in Language Programs states that the purpose of this test is to make a
8
Rebecca M. Valette, Modern Language ..., p. 5.
9
Wilmar  Tinambunan,  Evaluation  of  Students  Achievement,  Jakarta:  Depdikbud,  1988,  p. 7.
10
J,  Charles  Alderson,  et.  al.,  Language  Test  Construction  and  Evaluation,  Cambridge: Cambridge University Press, 1995, p. 11-12.
group  of  students  who  are  in  the  same  level  of  ability  so  teachers can focus and only concentrate on the problems or learning points
suitable for that level.
11
Moreover,  placement  tests  provide  information  that  helps  to place  students  in  the  part  of  learning  program  most  appropriate
with  their  levels  of  ability.  They  are  most  successful  in  term  of their use when they are constructed for particular situations.
12
Most placement  tests  constructed  by  classroom  teachers  are  pretests
which  function  to  know  the  readiness  of  students  to  begin  the instruction and to place the students in the part of learning activity
with the proper instruction.
2. Formative Test
Norman E.  Gronlund  writes  that  “formative  tests  are  given
periodically  during  instruction  to  monitor  pupil  learning  progress and  to  provide  ongoing  feedback  to  pupils  and  teachers.”
13
It usually  covers some parts of instruction, such as unit, chapter, etc.
In line with  the opinion above, formative tests  are carried out while  the  instruction  is  ongoing  to  identify  learning  progress
students have made and to give the continuous feedback in term of strengths  and  weaknesses  of  learning  activity.
14
Furthermore, “the formative test is given during the course of instruction; its purpose
to show which aspects of the chapter the student has mastered and where remedial work is necessary.”
15
11
James Dean Brown, Testing in Language Programs,  New Jersey: Prentice Hall Regents, 1996, p. 11.
12
Arthur Hughes, Testing for Language Teachers, Cambridge: Cambridge University Press, 2003, 2
nd
Ed., p. 16-17.
13
Norman E. Gronlund,  Measurement and Evaluation in Teaching, New York: Macmillan Publishing Co., Inc., 1981, 4
th
Ed., p. 125.
14
Wilmar Tinambunan, Evaluation of Students..., p. 8.
15
Rebecca M. Valette, Modern Language ..., p. 10.