Although the children of Bahá’ís, there is no objection at the present time, for purpose of keeping a correct census, and also ascertaining whether the young people are, sincerely, believers, and willing to do their share in service to the Faith, to asking them to make a declaration of their intention, at the age of fifteen or so.

Shoghi Effendi, Lights of Guidance, p. 154

At the age of 15, they may declare their Faith as a conviction, and be registered as Bahá’í youth,

whether the parents are Bahá’ís or not.

Shoghi Effendi, Lights of Guidance, p. 154

It matters not whether they mature later in one country than in another. The command of Bahá’u’lláh is universal, irrespective of any variance in the age of maturity in different countries and among different peoples.

Shoghi Effendi, Lights of Guidance, p. 233

Regarding children at fifteen a Bahá’í is of age as far as keeping the laws of the Aqdas is concerned -- prayer, fasting, etc. But children under fifteen should certainly observe the Bahá’í Holy Days, and not go to school, if this can be arranged on these nine days.

Shoghi Effendi, Lights of Guidance, p. 154

Regarding the age of fifteen fixed by Bahá’u’lláh; this relates only to purely spiritual functions and obligations and is not related to the degree of administrative capacity which is a totally different thing, and is, for the present, fixed at twenty-one.

Shoghi Effendi, Lights of Guidance, p. 154

The basic principle of the Cause is independent investigation of truth. This applies to us as much as to our children. They should be free to chose for themselves any religion they wish. To promise that they will belong to a certain Faith and not to another is therefore not only contrary to our precepts, but is also a futile promise to give. How can we make the future generation think as we do or follow our dictates. God has made them free. All that we can do is to open their eyes and tell them of what we think to be the truth.

Shoghi Effendi, Lights of Guidance, p. 156