Approvals are not bundled by a sponsor. Your eligible spouse and unmarried children under 21 derive from your petition, but each is assessed individually for admissibility and must have an immigrant visa number available. A promotional statement that families are 'included' says nothing about any individual family member's case.
What a sponsor cannot promise about your household
No project can promise a visa number, a processing time, or an age-protection outcome for a child approaching 21; those depend on law and on the priority date, not on the sponsor. A relative abroad does not need to hold any United States status first. And if a family member already holds lawful permanent residence, it is not cancelled simply because they marry or have a birthday — pending cases are the ones affected.
Full-time generally means at least 35 hours weekly; investor, spouse and children are excluded as qualifying workers, and direct and regional-center methods differ. Keep school enrolment plans separate from status eligibility, since neither a school admission nor an investment payment extends a child's qualifying age or guarantees the whole family completes the process together. Gather passports, birth and marriage records, custody or adoption evidence where applicable, translations, and records needed for individual admissibility review.