These Schools of Occult Meditation and Training for Initiation have been prophecied by the Master DK in Letters on Occult Meditation by AA Bailey. The following are some relevant quotes essentialised from that text.

From Letter IX in Letters on Occult Meditation 

Now I would emphatically point out to you the fact that all that I now impart is a portion of a tentative plan, which has in view the hastening of the evolution of the higher mind, and the bringing under control of the bodies of men, through the power of the God within.  This plan has been drawn up in view of the crying need of a world in which the mental equipment of men is increasing out of all proportion to their emotional balance and to their physical equipment...

Hence the Masters, if it can in any way be accomplished, purpose a movement that has in view the harnessing of the lower mind through the instrumentality of the people themselves.  With this object in view They plan to utilise the incoming Ray of Ceremonial Law or Organisation, and the period immediately co-incident or following the coming of the Great Lord, to start these schools (in a small inconspicuous way at first) and bring to the consciousness of men everywhere the following four fundamentals:—

 a. The evolutionary history of man from the mental side.

b. The septenary constitution of the macrocosm and the microcosm.

c. The laws governing man's being.

d. The method of occult development....

 A beginning has already been made........through the various schools at present extant.......All these are the beginnings of the plan.  When they are firmly grounded, when they are working smoothly and with public recognition, and when the world of men is being somewhat coloured by them and their subjective emphasis, when they are producing scholars and workers, politicians and scientists and educational leaders who make their impress on their environment, then mayhap will come the time for the founding in exoteric fashion of the true occult school.

 H. P. B. laid the foundation stone of the first school in this particular lesser cycle (which is nevertheless a relatively important one, being an outgrowth of the fifth root-race, the efflorescence of the fifth principle).  This is the keystone...

 It is therefore very essential that the emphasis is laid on the fact that no matter what the offshoots, the basic school of occultism is that one which has its root in the sacred centre of the planet, Shamballa..

 The one fundamental school may be recognised by certain outstanding characteristics:—

 By the basic character of the truths taught as embodied in the following postulates:—

 a. The unity of all life.

b. The graded steps of development as recognised in man, and by the graded steps of its curriculum, which lead a man from one expansion of consciousness to another until he has reached that which we call perfection.

c. The relationship between the microcosm and the macrocosm and its sevenfold application.

d. The method of this development and the place of the microcosm within the macrocosm as revealed through the study of the periodicity of all manifestation and the basic law of cause and effect.

 By the emphasis laid on character building and spiritual development as a foundation for the development of all the faculties inherent in the microcosm.  By the requirement, demanded of all affiliated pupils without exception, that the life of inner unfoldment and development should be paralleled by a life of exoteric service.

 By the graded expansions of consciousness that are the result of the imparted training; these lead a man on from step to step till he contacts his higher self, his Master, his egoic group, the First Initiator, the One Paramount Initiator, until he has contacted the Lord of his Ray and has entered into the bosom of his "Father Which is in Heaven".

 These are the outstanding features that are descriptive of the one true fundamental School....

 This fundamental school has three main branches and a fourth that is in process of forming and which will make the four branches of this fourth round.  These branches are as follows:—

 1. The trans-Himalayan Branch.

2. The southern India Branch.  (these are Aryan Branches)

3. A Branch that works with the fourth root-race and has two fourth root-race adepts at its head.

4. A Branch in process of forming that will have its headquarters in the Occident at some place not yet disclosed.  It has for its main object the instructing of those connected with the coming sixth root-race.

 These branches are and will be closely inter-allied and will work in the closest co-operation, being all focused and under the control of the Chohan at Shamballa.  The heads of each of the four branches communicate with each other frequently and are really like the faculty of one stupendous university, the four schools being like the various major departments of the foundations—like subsidiary colleges.  The aim of all is the evolution of the race, the object of all is to lead all to the point of standing before the One Initiator, the methods employed are fundamentally the same, though varying in detail, due to the racial characteristics of the races and types dealt with, and the fact that certain schools work paramountly with one ray and others with another.....

 At the outset I would point out to you that not every nation in the world will have its occult school.  Only as the causal body of the national group has reached a certain rate of vibration will it be possible to found and institute these schools.

 Branches, affiliated with one of the four central divisions of the one occult foundation, will be found in the following countries:

 Preparatory Grades      Advanced School

1. Greece or Syria leading to     Egypt

2. Middle West, U.S.A.            California

3. Southern France     ........  Italy

4. Scotland or Wales  .......  Ireland

5. Sweden      ..................  Russia

6. New Zealand          ....  Australia

There is also planned a preparatory school for the advanced egos of the fourth root-race.  This will be under the Manu of that race and will be situated in Japan, with its most esoteric branch in western China.  This makes the seventh in the group of schools outlined....

 This much of the plan has been permitted publication as an incentive to all of you to study with greater aspiration and to work with more strenuous application.  Each and all has his place in the plan would he but qualify by doing the necessary work.  That work should be:—

 An endeavour to recognise the Divine within each one.  In this manner the true occult obedience, which is an essential in all occult training, will be fostered and developed, being not based, as is so oft seen, on personality, but on that instinctive realisation of a Master, and the willing following that comes from the recognition of His powers, the purity of His life and aims, and the profundity of His knowledge....

 An endeavour to think in group terms and clearly for oneself, not depending upon the word of others for clarification.

 An endeavour to purify and refine all the bodies and make them more reliable servants.

 An endeavour to equip throughout the mental vehicle and to store within it the facts upon which extended knowledge may be based.

 If these things are done great will be the day of opportunity.

 Struggle, strive, discipline, and rejoicingly serve with no reward save the misunderstanding and the abuse of those who follow after—this is the role of the disciple.