Write the learning outcomes with a purpose. Have a coherent mission and know exactly what you need to measure. According to the American Association of Higher Education Forum, "assessment makes a difference when it begins with issues of use and illuminates questions that people really care about..." Make sure that assessments are written to this precept and that they are an integral part of measuring the learning outcome.
Clarify what you are trying to assess in order to meet the learning outcome. Use precise language and verbs such as, "create," "develop," "describe" and "show evidence of," rather than "understand," which is vague and does not measure the outcome. Use a wide range of ways of measuring learning so that, for instance, the person who is best in a hands-on laboratory situation is also able to demonstrate learning.
Build assessment into the academic year so that it is ongoing and allows the student to review her learning and set appropriate goals. Give prompt and constructive feedback so that this helps the student to know what she must do to improve her performance and meet her learning outcomes. Liaise with other people in the school so that a more holistic approach is taken to the student's experience.