50 a speaking class of mixed-
competence learners. Students’ autonomous learning, in fact,  emerges  during  the  learning  process  in  collaborative  learning  environment.
Whether  or  not  every  student  becomes  more  autonomous  during  the  action research  cycles  was  investigated  through  direct  classroom  observation  on  their
learning performance, as well as their responses to the interview.
B. REVIEW OF RELATED STUDIES
It is not easy to find studies related to teaching mixed-competence classes conducted in  Indonesia.  Because of this,  some related research reports discussed
in  this  section  are  from  overseas.  Research  on  mixed-ability  classes  is  a  fertile ground  of  study  since  there  are  many  aspects  to  investigate  Xanthou    Pavlou,
2010.  In  fact,  globally,  there  have  been  a  number  of  research  investigating different aspects of teaching classroom with mixed-competence learners, or what
is commonly addressed with mixed-ability classes. Xanthou and Pavlou are two education researchers from Cyprus who have
been focusing their studies on teaching in EFL mixed-ability class or MAC 2008, 2010. In their 2008’s study, they investigated how EFL teachers in Cyprus deal
with  MAC,  especially  with  regard  to  students  with  pre-existing  knowledge  of English  PKE.  Data  were  collected  from  questionnaire  responses  obtained  from
114 state primary school EFL teachers, and observation in level 1 EFL class of an urban primary school consisting of 25 children of mixed abilities. Those different
forms  of  data  were  then  compared .  The  study’s  main  finding  was  that  flexible
grouping  mixed  and  same  ability  groups,  cooperative  and  communicative PLAGIAT MERUPAKAN TINDAKAN TIDAK TERPUJI
51 activities, wor
d games, and task differentiation were proven as “effective weapons in the hands of the MAC EFL teachers
” Xanthou  Pavlou, 2008 p.14. Further, their  research  result  suggests  that  teachers  in  MAC  provide  communicative  and
cooperative tasks as they allow students to assist each other in activities, working in the Zone of Proximal Development Xanthou  pavlou, 2008, p.15.
A  later  study  performed  by  the  same  researchers  addressed  a  different issue,  yet  still  the  same  participants.  In  2010,  Xanthou  and  Pavlou  investigated
teachers’  perception  and  experiences  towards  students  with  and  without  PKE’s attitudes  in  multi-level  classes.  Similar  method  was  carried  out  to  the  same
participants  in  order  to  obtain  the  data.  A  number  of  findings  suggested unpleasant  facts.  They reported that students  with PKE seemed to  have  negative
attitudes towards the lesson as those true beginners were not easily involved in the lesson.  Meanwhile  students  without  PKE  were  disinterested  to  the  lesson,
seemingly caused by their low self-esteem affected by their lack of prior English knowledge.  This  raised  difficulties  for  teachers  in  handling  both  true  and  false
beginners  Xanthou    Pavlou,  2010,  p.482.  Implications  from  their  overall research  suggest  some  improvements  towards  EFL  teaching  system  and
methodology, as well as teacher’s trainings. A more recent research study by Carlson 2016 studies more specific and
direct  treatments  applied  in  the  teaching  of  mixed-level  EFL  class  in  Japan.  He reports  the  use  of  self-learning  portfolio  to  develop  community  and  active
participation  in  a  mixed-level  language  class.  The  self-learning  portfolio  is designed  as  a  student-centered  activity  that  includes  the  contribution  of  weaker
52 students while stronger students assume leadership role, so that cooperative spirit
is  promoted  in  learner  to  learner  interaction.  In  this  activity,  students  are encouraged  to  fill  their  own  portfolio  with  their  own  self-learning  results  on  a
weekly  assignment  in  the  forms  of  texts,  films,  or  articles.  The  learning  results should  contain  elements  obtained  from  the  texts,  such  as  key  vocabulary,
summary,  and  students’  questions  and  opinions  towards  the  texts.  Based  on  his study result, Carlson 2016 claims that this self-learning portfolio makes students
come to the class equipped with material to engage with peers, so discrepancies in ability  could  be  mitigated.  In  addition,  students’  interaction,  learning
responsibility, motivation, and self-esteem are increased p.39. All  in  all,  the  related  studies  reviewed  in  this  section  shed  light  for  EFL
researchers  who  are  interested  mainly  in  handling  mixed-competence  class.    For me  personally,  these  studies  are  useful  in  broadening  my  knowledge  in  how  to
teach the mixed-competence group of students. Through reviewing other research reports,  I  can  understand  possible  problems  that  may  occur  in  a  mixed-
competence  speaking  classroom  and  explore  the  suitable  strategies  to  deal  with them.
C. THEORETICAL FRAMEWORK
This  study  seeks  to  discover  whether  differentiated  instruction  is incorporated in the taken action to solve problems in a mixed-competence English
speaking  class.  Other than that, this  research intends  to  see if the taken  action is effective  in  improving  learning  process,  which  is  represented  through
learners’ PLAGIAT MERUPAKAN TINDAKAN TIDAK TERPUJI