Duplication of teachers' courses in special methods would be eliminated for a single course for all of the departments of biological science would be sufficient. Biology is the hub, and not the separate biological sciences, in the courses in this field in the secondary schools. The methods concerned are _biological methods_, and therefore a single course for all prospective teachers of biological science regardless of the nature of their major work, is a logical procedure. Whether such a course is a success or a failure is largely dependent on the professor in charge. In the past there have been many failures, mainly because the person conducting it has never had secondary school experience, knows little or nothing of the problems, and has no sincere enthusiasm for the teaching of science to boys and girls below the university age. The course suggested would cover an entire year. At least that much time is required to give any direction or instruction that is worth while. The first half of the year might well be devoted to a digestion and correlation of all previous work, organizing it into a form easily useable in the work to follow. Questions of method, recitation, laboratory and field work, textbooks and reference books purchase and use of equipment, must be given consideration in some part of the course. An outline course, with the separate lessons that make it up should be worked out in detail, for some particular locality, preferably the one where practice teaching is to be done. This should then be carefully tested by the criteria of a good biology course, as pointed out by the best authorities, and by _common sense_. But why make this skeleton outline beforehand? Why be prepared in anything? It will be too late to prepare at the moment the problem has to be met. Few new teachers will find a well planned course awaiting their arrival in a new field, and without previous experience a new teacher is likely to build up a course without due respect to relative values which comes only with a perspective of a course in its entirety. To illustrate, in the course given by an inexperienced teacher there is too much chance of six weeks time being spent on the study of the grasshopper, with only four weeks left at the end of the school year to be devoted to the biology of the human. The mapping of a course, by way of practice, gives the prospective teacher practice in the exercise of judgment, with helpful constructive criticism.