Formative evaluation is to gather information to understand strengths and weaknesses in order to improve teaching practice.
Summative evaluation is to gather evidence to inform judgements about teacher effectiveness.
 
Peer Roles in Formative and Summative Evaluation
Peer Observer: Peer observers are often colleagues who are involved in teacher evaluation in two related, yet distinct activities: formative and summative evaluation. The focus of formative peer observation is to improve teaching, while the focus of summative peer observation determines the teacher's effectiveness score or rating. Observations can be informal or formal depending on district needs and what is bargained collectively.
Peer Evaluator: Peer evaluators are involved in summative evaluation by contributing to the teacher's overall teacher rating or score from evidence collected during formal classroom observations.
Mentor: A mentor utilizes his/her expertise in confidential and non-evaluative roles to observe, analyze and support the induction, retention and continuous growth of teachers. In New York state, the mentor's role can be evaluative when bargained collectively.
Consulting Teacher: A consulting teacher is an expert or master teacher who observes and provides assistance to a participating teacher as part of a Peer Assistance and Review (PAR) program. Some union locals refer to the consulting teacher as a peer reviewer. PAR programs combine two distinct elements - assistance and review in teacher evaluation. Information collected by the consulting teacher is used to inform the PAR panel in making a recommendation regarding continuation or dismissal of teachers, usually a probationary teacher. The PAR program is aligned to the overall induction program, teacher evaluation system and professional development program.
Summary of Benefits, Expertise, Training and Key Considerations for Peer Roles  
    
        
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            | Roles | Benefits | Expertise  | Training | Considerations  | 
        
            | Peer Observer
 | Increase observations  (informal and formal).  Work across the district or  in one school.  Increase credibility of  feedback by helping teachers understand good teaching.  Provide content specific  and actionable feedback in a timely manner. Improve classroom practices  and student achievement.  | Observe classroom practice  as part of formative evaluation. Align evidence to  actionable feedback.  Engage in reflective  dialogue with teachers based on data and evidence. Inform teacher reflection  and professional learning goals and Professional Learning Plans (PLP).  Dual code observation.  | Requires evaluator training  and understanding of effective" teaching,  state standards and use of approved teacher practice rubric.  Ability to deliver high  quality feedback and engage in coaching conversations to promote  self-reflection and growth and use of videotaping and coding.  | Which teachers will be  served - beginning or probationary teachers, struggling teachers, and veteran  teachers?   Determine frequency and  length of observations to be conducted? Will the information be  used to inform teacher evaluation?  What assurance of  confidentiality will be provided to ensure trust in the process and data  security?   | 
        
            | Peer Evaluator  | Increase number &  reliability of observations and performance ratings.   Link teacher and evaluator  with grade level and content/ subject area expertise. Enhance leadership and  utilize expertise.  | Conduct summative  observations as part of teacher evaluation.   Collect accurate evidence  to inform summative evaluation. Determine teacher  effectiveness rating.  Dual code observation.  | Requires evaluator  training, meeting calibration and recalibration criteria on use of approved  teacher practice rubric, and use of evidence.   Delivering effective  feedback.   Use of data and data  management platform.    Use of videotaping and  coding.  | What are the qualifications  and selection process (letters of recommendation, interviews, and performance  task) and process to determine who will be selected?  What is the length of  service?  Will they be classroom  teachers who rotate back into the classroom?  Will they serve full-time  or part- time with release time and will you hire supplemental staff to cover  release time? Will they serve  district-wide?  How will information  collected be used to determine effectiveness rating?  What approach and  combination (principals, peer evaluators and peer observers etc.) of  evaluators will be involved? What assurance of  confidentiality will be provided to ensure trust in the process and data  security?   How and who will evaluate  the peer evaluator's effectiveness?   How will evaluators be  supported in their work over time?  | 
        
            | Mentor   | Support teachers' successful entry and transition into the profession by helping  beginning teachers analyze both teaching practice and student learning  through guided learning walkthroughs, classroom visitations and modeling,  coaching and review of classroom videos.  | Engage in self-reflection  and dialogue based on evidence and data.  Mentor role defined as  confidential and non-evaluative in regulation although information obtained  through mentoring can be used for evaluative purposes when the district of  BOCES has an agreement under Article 14.  | Requires training in  teaching standards, effective coaching and conversations that promote  self-reflection and growth. Modeling instruction. Creating professional  learning plans (PLP).  | Will their role be  confidential and non-evaluative or evaluative? Will they serve full-time  or part-time with release from instructional duties for time for classroom  visitations, observations?  Will mentors be  compensated?  | 
        
            | PAR Consulting Teacher
 | Vehicle for effective  labor/management collaboration & joint decision-making. Support from an "expert" peer who understands  effective teaching.     Build trust and increase  collaboration.  | Conduct classroom  observations to determine teacher effectiveness and recommendation for  renewal, support and dismissal.  Support beginning and/or struggling teachers  | Requires training, passing  certification and interrater reliability, exam, and calibration and  recalibration on use of approved teacher practice rubric. Use of evidence and data. Developing reports and  recommendations based on evidence  | What are the qualifications  and selection process (letters of recommendation, interviews, and performance  task) and consensus decision to determine who will be selected?  What is the caseload and  which teachers will be served?How will the PAR governing  panel operate (ratio of teachers to administrators on panel, joint  chairpersonship, and decisions-making process) and what will be the weight of  the CT's recommendation to the Panel?
 How long will CTS serve in  this position and what support and professional development will be provided? What assurance of  confidentiality will be provided to ensure trust in the process and data  security?    |